I had purchased the domain from freenom and added it to parked domain section on infinityfree client area and had changed the nameservers (as seen in the image below)
and has requested ssl certificate for my domain from infinityfree Free SSL Certificate section but now the problem is that on infinityfree it says me add some CNAME record to my domain in order to approve SSL Certificate request, but when I am changing my CNAME record in Freenom it forces me to change my nameservers to default freenom nameservers ns01.freenom.com ns02.freenom.com ns03.freenom.com ns04.freenom.com ns05.freenom.com